Ectopic pancreas is a rare entity referring to the presence of pancreatic tissue at an anatomic location distinct from the pancreas. Ectopic pancreatic lesions in the stomach present a diagnostic challenge because the lack of distinguishing imaging and endoscopic features make them difficult to differentiate from other types of submucosal lesions. We report a case of ectopic pancreas presenting as a gastric antral mass with a unique combination of rare complications: chronic pancreatitis and pseudocyst formation causing gastric outlet obstruction. This case highlights complications that can occur from ectopic pancreatic lesions and the challenges of diagnosing ectopic pancreas.
Keywords: ectopic pancreas; gastric outlet obstruction; heterotopic pancreas; pancreatic pseudocyst; pancreatic rest.
© 2023 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The American College of Gastroenterology.